Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885133 | Wear-resistant sintered iron-based alloy and process for producing the same | — | 1989-12-05 |
| 4848658 | Pressure accumulation type of fuel injection device for an internal combustion engine | Masahiro Aketa | 1989-07-18 |
| 4847056 | Method for removing hydrogen chloride from exhaust gas discharged from incinerator | Hajime Ase, Hisao Nara, Masao Sakai | 1989-07-11 |
| 4840665 | Wear-resistant sintered iron-based alloy and process for producing the same | — | 1989-06-20 |
| 4799970 | Surface treatment method for improving corrosion resistance of ferrous sintered parts | Takashi Koiso | 1989-01-24 |